| 摘要 |
An acoustical barrier (10) is mounted to the barrier wall (20) of a motor vehicle. The acoustical barrier (10) includes a mass layer (12) of molded construction and sound dampening characteristics. The mass layer (12) includes a plurality of grommets (14, 14', 14'', 54) integrally molded as a single piece with a lower surface of the mass layer. Each grommet (14, 14', 14'', 54) has a continuous wall with an inner peripheral surface (27, 27', 27'') with an upper portion of the wall integrally formed with the inner surface (18) of the mass layer and a lower portion of the wall having a lower edge (22, 22', 22'') abutting the barrier wall (20). The inner surface (27, 27', 27'') of the continuous wall defines an opening in each grommet (14, 14', 14'', 54). A plurality of openings (25, 25', 25'') in the mass layer are in communication with at least some of the grommet openings. Various fasteners (26, 70), shafts or sleeves (62), cables (64), wires, and other vehicle accessories can extend through one or more of the grommets and through corresponding openings (29) in the vehicle barrier wall (20) |
